Dear sir,
Regarding your request to adjust ACB setting, we would like to inform you as follow.
SETTING ACB FOR MDB SENKO PROJECT (REQUEST BY PEA)
1. MDB-A. 800AT/800AF (TR.500 KVA.)
>>> This ACB is already set as 800AT. (Ir = 1.0 x In = 1.0 x 800 = 800A.)
>>> But, all normal ACB start to pickup current at 105% of setting as standard. So, pickup current is 840A.
2. MDB-B 600AT/800AF (TR.400 KVA.)
>>> We will change This ACB setting and In from 640A. (Ir = 0.8 x In = 0.8 x 800 = 640A.) to 598.5A. (Ir = 0.95 x In = 0.95 x 630 = 598.5A.)
>>> But, all normal ACB start to pickup current at 105% of setting as standard. So, pickup current is 628.43A.
3. MDB-C 600AT/800AF (TR.400KVA.)